Summary:
Features include 1) resupinate growth on wood, 2) a fruitbody that is thin, white to yellowish, becoming thicker and waxy, with conspicuous rhizomorphs, 3) on drying a tendency to for the fruitbody to separate off in small rectangular blocks, 4) spores that are obliquely elliptic to pip-shaped, smooth, and colorless, and 5) a monomitic hyphal system, the subicular hyphae wide with large clamp connections.

Microscopic:
SPORES 6-8 x 3.5-4.5 microns, obliquely elliptic to pip-shaped, smooth, thin-walled; BASIDIA 4-spored, 25-35 x 5-6 microns, narrowly clavate; CYSTIDIA none; HYPHAE monomitic: subiculum hyphae 4-8 microns wide, loosely interwoven, somewhat thick-walled, sparsely branched and anastomosed, with clamp connections, subhymenium hyphae 3-4 microns wide, densely branched and interwoven, with clamp connections, (Eriksson), SPORES 4-4.5 x 3 microns, smooth, colorless, few found; no GLOEOCYSTIDIA, hyphae 4 microns wide, loosely interwoven, very thin-walled, abundantly nodose-septate, not encrusted, (Burt), SPORES 6-8(10) x 3-4(5) microns, (Julich)

Notes:
Ceraceomyces tessulatus has been found in BC, WA, OR, ID, AB, NS, ON, PQ, AL, AZ, LA, MD, ME, MO, NH, NM, NY, RI, SC, and VT, (Ginns), and Austria, Czechoslovakia, Estonia, Finland, France, Germany, Norway, Spain, Sweden, United Kingdom, and the USSR, (Julich).

Synonyms and Alternate Names:
Peniophora livida Burt
Peniophora segregata Bourdot & Galzin